Full list of all 65 Left 4 Dead achievements worth 1,500 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game on Xbox 360.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 15 achievements worth 500 Gamerscore.
- Hero Closet
Rescue a Survivor trapped in a closet.
- Hunter Punter
Shove a Hunter off of a pinned and helpless Survivor.
- Tongue Twister
Free yourself from a Smoker who has grabbed you with his tongue.
- No Smoking Section
Kill 10 Smokers as they are pulling helpless Survivors.
- 101 Cremations
Set 101 Infected on fire.
- Do Not Disturb
Sneak past all Witches in a campaign without disturbing one.
- Man vs Tank
Single-handedly kill a Tank.
Kill a Tank without it dealing any damage to a Survivor.
- Safety First
Play an entire campaign with no Survivors taking friendly fire damage.
- No-one Left Behind
Beat a campaign with all 4 Survivors.
Finish a campaign without ever being healed.
- Witch Hunter
Kill a Witch without any Survivor taking damage from her.
- Red Mist
Kill 1000 Infected with a mounted machine gun.
Blow up 20 Infected in a single explosion.
- Zombie Genocidest
Kill 53,595 Infected.
- Dead Giveaway
Heal a fellow Survivor when your own health is below 10.
- Stand Tall
Survive a campaign without being incapacitated.
- Zombicidal Maniac
Survive any campaign on Expert.
- What Are You Trying to Prove?
Survive all campaigns on Expert.
- Nothing Special
Survive a campaign with no Survivors taking damage from Special Infected.
- Burn the Witch
Light a Witch with a Molotov.
- Towering Inferno
Light a Tank with a Molotov.
- Spinal Tap
Kill an Infected with a single blow from behind.
- Stomach Upset
All Survivors complete a campaign without being vomited on.
- Brain Salad
Make 100 headshot kills.
- Jump Shot
Headshot a Hunter while he's leaping.
- Mercy Killer
Survive the No Mercy campaign.
- Back 2 Help
Leave a safe room to save an incapped teammate and bring them back safely.
- Toll Collector
Survive the Death Toll campaign.
- Dead Baron
Survive the Dead Air campaign.
- Grim Reaper
Survive the Blood Harvest campaign.
- Ground Cover
Save another Survivor from a Special Infected while on the ground.
- Clean Kill
Shove a Boomer and then kill him without him splashing on anyone.
- Big Drag
Drag a Survivor 100 feet with your tongue.
- Chain Smoker
Constrict two Survivors in one life as a Smoker.
- Barf Bagged
Cover four Survivors with Boomer bile at once.
- Double Jump
Pounce two different Survivors in one life as a Hunter.
- All 4 Dead
Kill all four Survivors in one life while playing as a Tank.
- Dead Wreckening
Dole out 5000 total Survivor damage as a Special Infected.
- Lamb 2 Slaughter
As an Infected, incap a Survivor who has entered and left a safe room.